Tubular rivet.



Patented July I7, |900.

vw. n, Fox. TUBULAR BNET.

(Application led June. 20, 18H8.)

(No Kodak.)

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UNITED STATES IVILLIAM' R. FOX, OF GRAND RAPIDS, MICHIGAN, ASSIGNOR 'IOTHE FOX PATENT OEEIEE.

MACHINE COMPANY, OF SAIWIE PLACE.

TUBULAR River.

SPECIFICATION forming part of Letters Patent No. 653,798, dated July1f?, 1900.

Original application iiled February 23,1898, Serial No. 671,323. Dividedand this application iiled J'une 20, 1898. Serial No. 683,958. (Nomodel.)

To ail whom t may concern,.-

Be itknown that I, WILLIAM R. FOX, a citizen of the United States,residing at Grand Rapids, county of Kent, and State of Michigan, haveinvented certain new and useful Improvements in Tubular Rivets, of whichthe following is a specication.

This application is a division of my application filed February 23,1898, Serial No.671,323, which was patented November 15, 1898, No.614,166.

My invention relates to improvements in tubular rivets of that classhaving annular shoulders for spacing the articles to be connected andreduced portions or extensions adapted to be headed down or upset toclamp the articles firmly against the shoulders. Heretofore such rivetshave usually been made by turning down a piece of metal tubing or bymaking the rivet out of a solid piece of metal or rod, boring out thehole, and turning down theends; but such a method adds too much to thecost of the article to make it a commercial success.

The object in the present invention is to overcome this diiculty; and myinvention consists in the improved article, said article consisting of atubular rivet composed of a sheet-metal blank rolled with its edgereduced to form a shoulder.

The invention is illustrated in the accom/- panying drawings, in whichFigure 1 is a sectional viewV showing two metal plates connected by myimproved rivet. Fig. 2 is a perspective view of the rivet. Fig.

3 is a view of the blank previous to its being rolled up to form therivet, and Fig. 4 is a plan view of a modification.

In the manufacture of my improved rivet I first form a plain blank inwhich the edges are reduced by rolling or pressure similarly applied, sothat the central part a oi the blank, which forms the body of the rivet,is of the normal thickness of the blank or wall of the body of therivet, While the edges a a are reduced in thickness to form the ends ofthe rivet, and there is left on each side of the thicker central portionof the blank a shoulder. The blank for the rivet, cut to proper length,is then rolled into the form of a rivet, as shown, for example, in Fig.2, and is then complete for use. Its application is illustrated in Fig.1, in which the plates B rest upon the shoulders, with the thickerportion o. between and the thinner or flange portions forming the endsof the rivet inserted through the plates and burred or turned over uponthe plates.

I claim- A tubular rivet composed of a rolled shouldered blank having athicker central portion and thinner edges, said blank being formed intubular shape, with the shouldered surface outward, substantially asdescribed.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM R. FOX.

Witnesses:

GEORGE s. MILLER, GEO. K. MGMULLEN.

